Add support for R based software

[chrisgorgo]

http://cran.r-project.org/web/packages/fmri/index.html
http://cran.r-project.org/web/packages/dti/index.html
especially adaptive smoothing

[duboism]

Seems an old issue but I was thinking that an R interface could be cool. This should be rather similar to MatlabCommand.